shots from the garage...

Those front pumps can be finicky... A little warping or tolerance issue and you can really chase your tail.
On the pump gear tab, Was that the H.D. set? Or just the O.E.M. style.... One of My teams just went threw that. After changing the gear set to the H.D. all seems to be in good order. Got about 70 passes on it now. They picked it up from ProTrans, But I think the part was from A&A Trans inventory. Good Steel part.
Just food for thought.
Well Hope it just dumped the pump drive on you... Sometimes we just miss the depth alignment from the converter to the pump?
You know, Don't get it spaced just rite. Hope the converter tab's are in good shape..